simpledb

Class LogicalFilterNode

java.lang.Object

simpledb.LogicalFilterNode

public class LogicalFilterNode
extends java.lang.Object

A LogicalFilterNode represents the parameters of a filter in the WHERE clause of a query.

Filter is of the form t.f p c

Where t is a table, f is a field in t, p is a predicate, and c is a constant

Field Summary

Fields

Modifier and Type	Field and Description
java.lang.String	c
java.lang.String	fieldPureName The field from t which is in the filter.
java.lang.String	fieldQuantifiedName
Predicate.Op	p The predicate in the filter
java.lang.String	tableAlias The alias of a table (or the name if no alias) over which the filter ranges

Constructor Summary

Constructors

Constructor and Description
LogicalFilterNode(java.lang.String table, java.lang.String field, Predicate.Op pred, java.lang.String constant)

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

tableAlias

public java.lang.String tableAlias

The alias of a table (or the name if no alias) over which the filter ranges

p

public Predicate.Op p

The predicate in the filter

c

public java.lang.String c

fieldPureName

public java.lang.String fieldPureName

The field from t which is in the filter. The pure name, without alias or tablename

fieldQuantifiedName

public java.lang.String fieldQuantifiedName

Constructor Detail

LogicalFilterNode

public LogicalFilterNode(java.lang.String table,
                         java.lang.String field,
                         Predicate.Op pred,
                         java.lang.String constant)